UE Wake-Up Delay Signaling for Reliable Sleep-State Data Reception
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Solution Overview
Problem
In wireless communication systems, user equipment (UE) may miss downlink data or waste energy due to unclear wake-up delays during the transition from a sleep state to a working state, as the network device is unaware of the UE's sleep state and wake-up delay.
Innovation Solution
The network device sends indication information, such as higher-layer signaling or DCI, to the UE to specify a wake-up delay for transitioning from a sleep state to a working state, ensuring synchronized data transmission and energy efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the UE monitors LP WUS in sleep state to save energy, then energy consumption is reduced, but the UE may miss downlink data due to unclear wake-up delay timing
Solution Approach 1:
The network device performs preliminary action by sending indication information (higher-layer signaling or DCI) to the UE before data transmission, specifying the wake-up delay timing in advance. This allows the UE to know exactly when to wake up from sleep state, ensuring it is ready to receive data without missing any downlink transmissions while still maintaining sleep mode for energy savings.
2Reliability
If the UE wakes up immediately to ensure complete data reception, then data reception reliability is improved, but energy consumption increases
Solution Approach 1:
The solution introduces dynamic wake-up delay adjustment based on network conditions and UE capabilities. The network device can flexibly configure different wake-up delay values through indication information, allowing the UE to adapt its wake-up timing dynamically. This enables optimization between energy consumption and data reception reliability by selecting appropriate delay values for different scenarios.
3Reliability
If the network device sends indication information via higher-layer signaling, then wake-up delay specification is achieved, but signaling overhead and transmission time increase
Solution Approach 1:
The network device merges the wake-up delay indication with existing DCI structures used for scheduling and control. By incorporating wake-up delay information into already-necessary downlink control messages, the solution avoids separate signaling transmissions. This reduces additional signaling overhead and transmission time while still providing accurate wake-up delay specification to the UE.
Data Source
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AI summary
The present disclosure provides a method and apparatus for transmitting indication information, and a readable storage medium. The method comprises: sending first indication information to a user equipment, wherein the first indication information is used for indicating a wake-up delay of switching the user equipment from a sleep state to an operating state. According to the method of the present disclosure, by means of issued first indication information, a network device indicates a wake-up delay that needs to be satisfied in a wake-up process to a user equipment. Therefore, the network device and the user equipment can perform data transmission on the basis of the same wake-up delay, thereby ensuring that the user equipment can completely receive data while saving the energy consumption of the user equipment is saved.